JPH04239339A - Request answer monitoring system - Google Patents

Abstract

PURPOSE:To reduce the cost and to simplify the constitution of a monitoring device by providing a monitored device connected to the monitoring device via a circuit and returning an answer from the monitored device to a request of the monitoring device. CONSTITUTION:A state informing means 4 of a monitoring device 3 sends a timer monitoring request C to a timer 5 together with a state information request A vie a circuit 7. A state information request reception/answer means 2 of a monitored device 1 receives the request A and transmits a state information answer B via the circuit 7. A state information reception means 6 of the device 3 receives the answer B and sends a timer monitor cancel request D to the timer 5. Then the timer monitor time-out information E is sent to the means 6 if the means 6 does not receive the answer B within a fixed timer monitoring time. As a result, the cost of the device 3 is reduced together with a simple constitution secured for the device 3.

Description

【発明の詳細な説明】[Detailed description of the invention]

【０００１】0001

【産業上の利用分野】本発明は要求時応答監視方式に関
し、特に相互に回線を介して接続された監視装置と監視
される装置との間で状態通知を送受するタイミングの取
り方に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a request response monitoring system, and more particularly to how to determine the timing for transmitting and receiving status notifications between a monitoring device and a monitored device that are connected to each other via a line.

【０００２】0002

【従来の技術】従来、相互に回線を介して接続された監
視装置と監視される装置との間での状態通知をするタイ
ミングは、一定時間間隔の間に監視される装置から監視
装置に状態通知をし、監視装置は常に状態通知を受付け
られるようになっていなければならなかった。2. Description of the Related Art Conventionally, the timing of status notification between a monitoring device and a monitored device that are connected to each other via a line is determined by the timing of notifying the status from the monitored device to the monitoring device during a certain time interval. The monitoring device had to be able to receive status notifications at all times.

【０００３】図２は従来方式の例を示すブロック図であ
る。同図において、監視される装置１１は状態通知手段
１２を含む。監視装置１３は状態通知受付手段１４とタ
イマー１５を含む。また、Ｘは状態通知、Ｙはタイマー
監視要求、Ｚはタイマー監視タイムアウト通知をそれぞ
れ示す。FIG. 2 is a block diagram showing an example of a conventional method. In the same figure, the device 11 to be monitored includes status notification means 12 . The monitoring device 13 includes a status notification receiving means 14 and a timer 15. Further, X indicates a status notification, Y indicates a timer monitoring request, and Z indicates a timer monitoring timeout notification.

【０００４】このとき、監視装置１３の状態通知受付手
段１４はタイマー１５にタイマー監視要求Ｙを発行し、
監視される装置１１からの状態通知Ｘを待つ。監視され
る装置１１の状態通知手段１２は回線１６を介して状態
通知Ｘを送信する。At this time, the status notification receiving means 14 of the monitoring device 13 issues a timer monitoring request Y to the timer 15,
Waits for status notification X from the monitored device 11. The status notification means 12 of the monitored device 11 sends status notifications X via the line 16.

【０００５】状態通知受付手段１４は状態通知Ｘを受信
するとタイマー１５に新たにタイマー監視要求Ｙを発行
し、再び状態通知Ｘを待つ。一定時間内に状態通知Ｘを
状態通知受付手段１４が受信しない場合は、タイマー１
５がタイマー監視タイムアウト通知Ｚを状態通知受付手
段１４に通知する。[0005] When the status notification receiving means 14 receives the status notification X, it issues a new timer monitoring request Y to the timer 15 and waits for the status notification X again. If the status notification receiving means 14 does not receive the status notification X within a certain period of time, the timer 1
5 notifies the status notification receiving means 14 of the timer monitoring timeout notification Z.

【０００６】上記のように従来方式では、監視装置１３
は監視される装置１１の状態通知を受取り、また、状態
通知を一定時間内に受取れないことはタイマー１５のタ
イムアウトにより認識する。As described above, in the conventional system, the monitoring device 13
receives the status notification of the monitored device 11, and recognizes by the timeout of the timer 15 that the status notification cannot be received within a certain period of time.

【０００７】[0007]

【発明が解決しようとする課題】上述した従来の方式で
は、状態通知のタイミングの主導権は監視される装置に
あり、監視装置は常に状態通知を受付けられるようにな
っていなければならない。したがって監視される装置が
多数になると、その数だけ状態通知を受付ける手段が必
要であり、その分費用が嵩み構成も複雑となる欠点があ
る。In the above-described conventional system, the monitored device has the initiative in determining the timing of status notifications, and the monitoring device must always be able to receive status notifications. Therefore, when the number of devices to be monitored increases, means for receiving status notifications are required for the number of devices, which has the drawback of increasing costs and complicating the configuration.

【０００８】[0008]

【課題を解決するための手段】本発明の要求時応答監視
方式は、相互に回線を介して接続された監視装置と監視
される装置を有し、前記監視装置の要求時に前記監視さ
れる装置から応答を返えすようにして構成される。[Means for Solving the Problems] The demand response monitoring system of the present invention includes a monitoring device and a monitored device that are connected to each other via a line, and the monitored device is configured to respond when the monitoring device makes a request. It is configured to return a response from.

【０００９】また、本発明の要求時応答監視方式におい
て、前記監視装置は前記監視される装置の状態通知を要
求する手段と，前記状態通知を要求してから一定時間内
に前記状態通知の応答が得られるかを監視するタイマー
と，前記状態通知を受付ける手段とを具備し、前記監視
される装置は前記状態通知の要求を受付け応答する手段
を具備する。Further, in the request response monitoring system of the present invention, the monitoring device includes means for requesting a status notification of the monitored device, and a means for requesting a response to the status notification within a certain period of time after requesting the status notification. The apparatus includes a timer for monitoring whether the status notification is obtained, and means for receiving the status notification, and the monitored device includes means for accepting and responding to the status notification request.

【００１０】0010

【実施例】次に、本発明について図面を参照して説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be explained with reference to the drawings.

【００１１】図１は本発明の一実施例を示すブロック図
である。同図において、監視される装置１は状態通知要
求受付応答手段２を含む。監視装置３は状態通知要求手
段４とタイマー５と状態通知受付手段６とを含む。監視
される装置１と監視装置３は回線７で接続されている。 また、Ａは状態通知要求，Ｂは状態通知応答，Ｃはタイ
マー監視要求，Ｄはタイマー監視取消要求，Ｅはタイマ
ー監視タイムアウト通知をそれぞれ示す。FIG. 1 is a block diagram showing one embodiment of the present invention. In the figure, a device 1 to be monitored includes a status notification request reception/response means 2. As shown in FIG. The monitoring device 3 includes a status notification requesting unit 4, a timer 5, and a status notification receiving unit 6. The device 1 to be monitored and the monitoring device 3 are connected by a line 7. Further, A indicates a status notification request, B indicates a status notification response, C indicates a timer monitoring request, D indicates a timer monitoring cancellation request, and E indicates a timer monitoring timeout notification.

【００１２】次に、上記の要求時応答監視方式の動作を
説明する。まず、監視装置３の状態通知手段４はタイマ
ー５にタイマー監視要求Ｃを発行するとともに、回線７
を介して状態通知要求Ａを送信する。監視される装置１
の状態通知要求受付・応答手段２は状態通知要求Ａを受
信すると回線７を介して状態通知応答Ｂを送信する。監
視装置３の状態通知受付手段６は上記の状態通知応答Ｂ
を受信すると、タイマー５に対してタイマー監視取消要
求Ｄを発行する。Next, the operation of the above request response monitoring system will be explained. First, the status notification means 4 of the monitoring device 3 issues a timer monitoring request C to the timer 5, and also issues a timer monitoring request C to the timer 5.
A status notification request A is sent via. Monitored device 1
When the status notification request reception/response means 2 receives the status notification request A, it transmits a status notification response B via the line 7. The status notification receiving means 6 of the monitoring device 3 receives the above status notification response B.
When receiving this, it issues a timer monitoring cancellation request D to the timer 5.

【００１３】また、一定時間のタイマー監視時間内に状
態通知受付手段６が状態通知応答Ｂを受信しない場合、
タイマー５はタイマー監視タイムアウト通知を状態通知
受付手段６に通知する。[0013] Furthermore, if the status notification receiving means 6 does not receive the status notification response B within the predetermined timer monitoring time,
The timer 5 notifies the status notification receiving means 6 of a timer monitoring timeout notification.

【００１４】上記のようにして監視装置３は監視される
装置１の状態通知を受取ることができ、また状態通知を
一定時間内に受取れないことはタイマー５のタイムアウ
トにより認識することができる。As described above, the monitoring device 3 can receive the status notification of the monitored device 1, and can recognize by the timeout of the timer 5 that the status notification cannot be received within a certain period of time.

【００１５】[0015]

【発明の効果】以上説明したように本発明は、状態通知
要求手段が状態通知要求を送信してから状態通知応答を
受信するまでの間だけ、状態通知受付手段は状態通知応
答を待てばよい。したがって状態通知要求と状態通知応
答を次々に別の監視される装置に実施してゆけば、監視
される装置が増えても状態通知要求手段・状態通知受付
手段は一組あれば充分であり、監視装置の費用の削減と
単純化の効果がある。As explained above, in the present invention, the status notification receiving unit only needs to wait for the status notification response from the time the status notification requesting unit sends the status notification request until the status notification response is received. . Therefore, if status notification requests and status notification responses are sent to different monitored devices one after another, even if the number of monitored devices increases, one set of status notification requesting means and status notification receiving means is sufficient. This has the effect of reducing the cost and simplifying the monitoring equipment.

【図面の簡単な説明】[Brief explanation of the drawing]

【図１】本発明の一実施例を示すブロック図。FIG. 1 is a block diagram showing one embodiment of the present invention.

【図２】従来例を示すブロック図。FIG. 2 is a block diagram showing a conventional example.

【符号の説明】[Explanation of symbols]

１　　　　監視される装置 ２　　　　状態通知要求受付応答手段 ３　　　　監視装置 ４　　　　状態通知要求手段 ５　　　　タイマー ６　　　　状態通知受付手段 ７　　　　通信回線 1. Equipment to be monitored 2 Status notification request reception response means 3. Monitoring device 4 Status notification request means 5. Timer 6 Status notification reception means 7 Communication line

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】　　相互に回線を介して接続された監視装
置と監視される装置を有し、前記監視装置の要求時に前
記監視される装置から応答を返えすことを特徴とする要
求時応答監視方式。1. Request-response monitoring comprising a monitoring device and a monitored device that are connected to each other via a line, and the monitored device returns a response upon a request from the monitoring device. method. 【請求項２】　　請求項１記載の要求時応答監視方式に
おいて、前記監視装置は前記監視される装置の状態通知
を要求する手段と，前記状態通知を要求してから一定時
間内に前記状態通知の応答が得られるかを監視するタイ
マーと，前記状態通知を受付ける手段とを具備し、前記
監視される装置は前記状態通知の要求を受付け応答する
手段を具備することを特徴とする要求時応答監視方式。2. The request response monitoring system according to claim 1, wherein the monitoring device includes means for requesting a status notification of the monitored device, and a means for requesting the status notification within a certain period of time after requesting the status notification. a timer for monitoring whether a response is obtained; and means for accepting the status notification; and the monitored device is equipped with a means for accepting and responding to the status notification request. Monitoring method.